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If you weren’t already convinced by the fact that a show about a pants-wearing sponge living under the sea takes more than a few artistic liberties when it come to depicting reality, here’s another: YouTube personality and self-proclaimed “mathemusician” Vi Hart is arguing that Nickelodeon’s SpongeBob SquarePants does not live in an actual pineapple—and she’s made a video to prove it.

“Dear Nickelodeon,” she starts. “I’ve gotten over how SpongeBob’s pants are not actually square. I can ignore most of the time that Gary’s shell is not a logarithmic spiral. But what I cannot forgive is that SpongeBob’s pineapple house is a mathematical impossibility.”

Using the Fibonacci sequence in mathematics, she draws (rather impressive) diagrams while explaining the mathematics behind spirals and how real pineapples follow the principle, while Nickelodeon’s animated depiction does not.

As long as she’s discussing impossibilities, should we bring up the fact that SpongeBob’s pet snail meows like a cat?